root/drivers/net/wireless/ti/wlcore/rx.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * This file is part of wl1271
   4  *
   5  * Copyright (C) 1998-2009 Texas Instruments. All rights reserved.
   6  * Copyright (C) 2008-2009 Nokia Corporation
   7  *
   8  * Contact: Luciano Coelho <luciano.coelho@nokia.com>
   9  */
  10 
  11 #ifndef __RX_H__
  12 #define __RX_H__
  13 
  14 #include <linux/bitops.h>
  15 
  16 #define WL1271_RX_MAX_RSSI -30
  17 #define WL1271_RX_MIN_RSSI -95
  18 
  19 #define RSSI_LEVEL_BITMASK      0x7F
  20 #define ANT_DIVERSITY_BITMASK   BIT(7)
  21 
  22 #define SHORT_PREAMBLE_BIT   BIT(0)
  23 #define OFDM_RATE_BIT        BIT(6)
  24 #define PBCC_RATE_BIT        BIT(7)
  25 
  26 #define PLCP_HEADER_LENGTH 8
  27 #define RX_DESC_PACKETID_SHIFT 11
  28 #define RX_MAX_PACKET_ID 3
  29 
  30 #define RX_DESC_VALID_FCS         0x0001
  31 #define RX_DESC_MATCH_RXADDR1     0x0002
  32 #define RX_DESC_MCAST             0x0004
  33 #define RX_DESC_STAINTIM          0x0008
  34 #define RX_DESC_VIRTUAL_BM        0x0010
  35 #define RX_DESC_BCAST             0x0020
  36 #define RX_DESC_MATCH_SSID        0x0040
  37 #define RX_DESC_MATCH_BSSID       0x0080
  38 #define RX_DESC_ENCRYPTION_MASK   0x0300
  39 #define RX_DESC_MEASURMENT        0x0400
  40 #define RX_DESC_SEQNUM_MASK       0x1800
  41 #define RX_DESC_MIC_FAIL          0x2000
  42 #define RX_DESC_DECRYPT_FAIL      0x4000
  43 
  44 /*
  45  * RX Descriptor flags:
  46  *
  47  * Bits 0-1 - band
  48  * Bit  2   - STBC
  49  * Bit  3   - A-MPDU
  50  * Bit  4   - HT
  51  * Bits 5-7 - encryption
  52  */
  53 #define WL1271_RX_DESC_BAND_MASK    0x03
  54 #define WL1271_RX_DESC_ENCRYPT_MASK 0xE0
  55 
  56 #define WL1271_RX_DESC_BAND_BG      0x00
  57 #define WL1271_RX_DESC_BAND_J       0x01
  58 #define WL1271_RX_DESC_BAND_A       0x02
  59 
  60 #define WL1271_RX_DESC_STBC         BIT(2)
  61 #define WL1271_RX_DESC_A_MPDU       BIT(3)
  62 #define WL1271_RX_DESC_HT           BIT(4)
  63 
  64 #define WL1271_RX_DESC_ENCRYPT_WEP  0x20
  65 #define WL1271_RX_DESC_ENCRYPT_TKIP 0x40
  66 #define WL1271_RX_DESC_ENCRYPT_AES  0x60
  67 #define WL1271_RX_DESC_ENCRYPT_GEM  0x80
  68 
  69 /*
  70  * RX Descriptor status
  71  *
  72  * Bits 0-2 - error code
  73  * Bits 3-5 - process_id tag (AP mode FW)
  74  * Bits 6-7 - reserved
  75  */
  76 #define WL1271_RX_DESC_STATUS_MASK      0x07
  77 
  78 #define WL1271_RX_DESC_SUCCESS          0x00
  79 #define WL1271_RX_DESC_DECRYPT_FAIL     0x01
  80 #define WL1271_RX_DESC_MIC_FAIL         0x02
  81 
  82 #define RX_MEM_BLOCK_MASK            0xFF
  83 #define RX_BUF_SIZE_MASK             0xFFF00
  84 #define RX_BUF_SIZE_SHIFT_DIV        6
  85 #define ALIGNED_RX_BUF_SIZE_MASK     0xFFFF00
  86 #define ALIGNED_RX_BUF_SIZE_SHIFT    8
  87 
  88 /* If set, the start of IP payload is not 4 bytes aligned */
  89 #define RX_BUF_UNALIGNED_PAYLOAD     BIT(20)
  90 
  91 /* If set, the buffer was padded by the FW to be 4 bytes aligned */
  92 #define RX_BUF_PADDED_PAYLOAD        BIT(30)
  93 
  94 /*
  95  * Account for the padding inserted by the FW in case of RX_ALIGNMENT
  96  * or for fixing alignment in case the packet wasn't aligned.
  97  */
  98 #define RX_BUF_ALIGN                 2
  99 
 100 /* Describes the alignment state of a Rx buffer */
 101 enum wl_rx_buf_align {
 102         WLCORE_RX_BUF_ALIGNED,
 103         WLCORE_RX_BUF_UNALIGNED,
 104         WLCORE_RX_BUF_PADDED,
 105 };
 106 
 107 enum {
 108         WL12XX_RX_CLASS_UNKNOWN,
 109         WL12XX_RX_CLASS_MANAGEMENT,
 110         WL12XX_RX_CLASS_DATA,
 111         WL12XX_RX_CLASS_QOS_DATA,
 112         WL12XX_RX_CLASS_BCN_PRBRSP,
 113         WL12XX_RX_CLASS_EAPOL,
 114         WL12XX_RX_CLASS_BA_EVENT,
 115         WL12XX_RX_CLASS_AMSDU,
 116         WL12XX_RX_CLASS_LOGGER,
 117 };
 118 
 119 struct wl1271_rx_descriptor {
 120         __le16 length;
 121         u8  status;
 122         u8  flags;
 123         u8  rate;
 124         u8  channel;
 125         s8  rssi;
 126         u8  snr;
 127         __le32 timestamp;
 128         u8  packet_class;
 129         u8  hlid;
 130         u8  pad_len;
 131         u8  reserved;
 132 } __packed;
 133 
 134 int wlcore_rx(struct wl1271 *wl, struct wl_fw_status *status);
 135 u8 wl1271_rate_to_idx(int rate, enum nl80211_band band);
 136 int wl1271_rx_filter_enable(struct wl1271 *wl,
 137                             int index, bool enable,
 138                             struct wl12xx_rx_filter *filter);
 139 int wl1271_rx_filter_clear_all(struct wl1271 *wl);
 140 
 141 #endif